olemus
andmeelementi varjav ja/või asendav tähis, näiteks juhuarv

Wiktionary:
14. (computing) an atomic piece of data, such as a word, for which a meaning may be inferred during parsing
16. (computing) a meaningless placeholder used as a substitute for sensitive data

näiteid
https://en.wikipedia.org/wiki/Tokenization_(data_security)